ZODB Components: Component accessors required to fill registry dict may have not be generated.

For now, just ignore it but it may be required later to define dummy accessors
so that the registry and Components can be loaded even when their accessors
are not generated yet.

product/ERP5Type/dynamic/component_package.py

@@ -111,13 +111,19 @@ class ComponentDynamicPackage(ModuleType):
           # Only consider modified or validated states as state transition will
           # be handled by component_validation_workflow which will take care of
           # updating the registry
-          if component.getValidationState() in ('modified', 'validated'):
-            version = component.getVersion(validated_only=True)
-            # The versions should have always been set on ERP5Site property
-            # beforehand
-            if version in version_priority_set:
-              reference = component.getReference(validated_only=True)
-              self.__registry_dict.setdefault(reference, {})[version] = component
+          try:
+            validation_state_tuple = component.getValidationState()
+          except AttributeError:
+            # XXX: Accessors may have not been generated yet
+            pass
+          else:
+            if validation_state_tuple in ('modified', 'validated'):
+              version = component.getVersion(validated_only=True)
+              # The versions should have always been set on ERP5Site property
+              # beforehand
+              if version in version_priority_set:
+                reference = component.getReference(validated_only=True)
+                self.__registry_dict.setdefault(reference, {})[version] = component
 
     return self.__registry_dict